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Updated by Cathy Yenca on Jul 06, 2016
Cathy Yenca Cathy Yenca
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Handy Math Resources

Math resources for practice and problem solving.

Dan Meyer's Three-Act Math Tasks

This Google Doc is full of classroom-ready authentic math tasks and videos by (the) Dan Meyer.

Estimation 180

An authentic estimation problem for every day of the school year, compliments of Mr. Andrew Stadel.

Yummy Math | We provide teachers and students with mathematics relevant to our world today ...

Authentic, relevant math tasks neatly organized by category.

Math Mistakes:

Authentic in a different way - this site provides a place to share student work with other math educators and discuss and help correct common student errors and misconceptions.

Graphing Stories - 15 seconds at a time

Graphing Stores: Short video stories that help students learn to graph on a plane.

Mathematical Moments from the AMS

A series of posters and publications that promote appreciation and understanding of the role mathematics plays in science, nature, technology and human culture.


Math activities for students and teachers of all grade levels.

Writing in Math

Writing prompts for the mathematics classroom from the Port Angeles school district.

Tutor-USA: Free Math Worksheets

Free Math Worksheets and Printables with Answers. Algebra, Geometry, Calculus, Basic Math, Kindergarten and other Free Worksheets for teachers, students, parents.


80,000 of the best questions from NY Regents, State Assessments, Academic Competitions, and more. Search by topic or exam. Select, arrange, and format!

Common Core Sheets

Math worksheets sorted by topic.

Math Bits Secondary Math Resources with the Common Core

Creative and engaging activities and resources for junior and senior high school mathematics aligned with the Common Core State Standards for Mathematics.

Activity Builder by Desmos

Build your own Desmos Activity! There are three screen types: graph, question, and text. You may use as many as you like, in any order you like. You can drag to rearrange the screens, and edit your activity as many times as you need. When it’s ready, click "Start a New Session" to get a dashboard and class code for your class. Copy and paste the link to share it with other teachers. Your Activity Builder activity is available on your browse activities page.

Polygraph by Desmos

A partners game that encourages quality questioning and using academic vocabulary! Use the ready-made games or create your own!

MathyCathy's Blog – Mrs. Cathy Yenca

Visit my real-life 21st-century 1:1 iPad classroom and see what we're up to.

Explore Math-Twitter-Blog-O-Sphere Resources #MTBoS by MathyCathy

Explore the #MTBoS - This ThingLink is packed with grassroots teacher-created resources worth exploring. Click around and be inspired!

Mathematics Assessment Project

Classroom challenges and tasks.

  • Cathy Yenca teaches middle school mathematics in a one-to-one iPad classroom in Austin, Texas. Virtually visit her real-life 21st-century classroom anytime at

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